Use of the unreal editor only in the manufacturing industry

I work for a major car manufacturer in the UK and I want to role out a project where supervisors can build their areas in the editor. The models would be pre built for them in Maya and all they would be doing is using the Unreal Editor to visualise their area in 3D so that they can move things around and try things to optimise their areas.
No game would be made or released, just the editor as tool to move around things like racks and pallets. I would like the stations in the building to have their own to play with and see if it helps them make improvements to their zones.
Since no game is being made and theres no profit being made, would I be able to install the engine on all 50 and use it for free? Kind of like architectural visualisation is free?

Thanks in advance

Ross

As you propose, it looks like no revenue would be generated as a result of that use, so there would be no royalties.